array delete function with tests

array_delete.js

/**
 * Remove item from array via identity check.
 *
 * @param array
 * @param item
 * @returns {[*]}
 */
static remove (array: Array, item) {
  const result = [...array]
  const foundItemIndex = array.indexOf(item)
  if (foundItemIndex !== -1) {
    result.splice(foundItemIndex, 1)
  }

  return result
}

// Tests
it('removes element in array', () => {
  const object1 = { id: 1 }
  const object2 = { id: 2 }
  const array = [object1, object2]
  expect(ArrayHelpers.remove(array, object1).length).toBe(1)
  expect(ArrayHelpers.remove(array, { id: 1 }).length).toBe(2)
})